Passing down MediaWiki template arguments to custom HTML attributes

Question

Consider a custom MediaWiki extension that adds a new tag named simplified_example with some JavaScript (just calling alert with provided argument for simplicity):

<?php
if ( ! defined( 'MEDIAWIKI' ) ) die();

$wgExtensionFunctions[] = 'registerTags';
$wgExtensionCredits['parserhook'][] = array(
    'name' => 'myTags',
);

function registerTags() {
    global $wgParser;
    $wgParser->setHook('simplified_example', function ($input, $argv, $parser, $frame) {
        $output = $parser->recursiveTagParse($input, $frame);
        $title = $argv["value"];
        return "<div onclick=\"alert('$title')\">$output</div>";
    });
}
?>

Using that I can put following code in a MediaWiki page source:

<simplified_example value="Testing">...</simplified_example>

This results with ... div being clickable - a message box with provided text is displayed. Now I wanted to place this tag inside a template, like this:

<simplified_example value="{{{1}}}">...</simplified_example>

When I put this template into a MediaWiki page:

{{TestTemplate|Testing...}}

Once again I obtain a clickable ... but displayed message is not evaluated and {{{1}}} is displayed instead of provided Testing....

How can I pass the argument from MediaWiki page source down to my custom tag through a template?

Answer 1

Try to use #tag function instead of html in your template, like this:

{{#tag:simplified_example|value={{{1}}} }}